u-boot/drivers/mmc/rockchip_sdhci.c
Masahiro Yamada 24f5aec364 mmc: squash lines for immediate return
These functions can be much simpler by squashing lines for immediate
return.

For *_bind() callbacks, they will be a simple wrapper function of an
upper-level bind API.

For mmc_set_{boot_bus_width,part_conf}, they will be a wrapper of
mmc_switch().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2016-09-23 17:53:44 -04:00

84 lines
1.8 KiB
C

/*
* (C) Copyright 2016 Fuzhou Rockchip Electronics Co., Ltd
*
* Rockchip SD Host Controller Interface
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <libfdt.h>
#include <malloc.h>
#include <sdhci.h>
/* 400KHz is max freq for card ID etc. Use that as min */
#define EMMC_MIN_FREQ 400000
struct rockchip_sdhc_plat {
struct mmc_config cfg;
struct mmc mmc;
};
struct rockchip_sdhc {
struct sdhci_host host;
void *base;
};
static int arasan_sdhci_probe(struct udevice *dev)
{
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
struct rockchip_sdhc *prv = dev_get_priv(dev);
struct sdhci_host *host = &prv->host;
int ret;
host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
ret = sdhci_setup_cfg(&plat->cfg, host, CONFIG_ROCKCHIP_SDHCI_MAX_FREQ,
EMMC_MIN_FREQ);
host->mmc = &plat->mmc;
if (ret)
return ret;
host->mmc->priv = &prv->host;
host->mmc->dev = dev;
upriv->mmc = host->mmc;
return sdhci_probe(dev);
}
static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
{
struct sdhci_host *host = dev_get_priv(dev);
host->name = dev->name;
host->ioaddr = dev_get_addr_ptr(dev);
return 0;
}
static int rockchip_sdhci_bind(struct udevice *dev)
{
struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
return sdhci_bind(dev, &plat->mmc, &plat->cfg);
}
static const struct udevice_id arasan_sdhci_ids[] = {
{ .compatible = "arasan,sdhci-5.1" },
{ }
};
U_BOOT_DRIVER(arasan_sdhci_drv) = {
.name = "arasan_sdhci",
.id = UCLASS_MMC,
.of_match = arasan_sdhci_ids,
.ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata,
.ops = &sdhci_ops,
.bind = rockchip_sdhci_bind,
.probe = arasan_sdhci_probe,
.priv_auto_alloc_size = sizeof(struct rockchip_sdhc),
.platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat),
};